Present Simple vs Past Simple

I ... flowers every week. Last week I ... roses. (buy)

He usuually ... the bus to work, but last week he ... the train. (take)

Last Summer we ... to Spain by boat. We ... there every year. (go)

They always ... chicken for lunch on Sundays, but they ... fish yestertday. (eat)

She ... Tone on his bike last morning, but she usually ... him in the evenings. (see)

I often ... milk for breakfast, but when we were on holiday I ... orange juice. (drink)